# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/dist/fini_manifest.gni")

# Validates a component manifest against a package manifest.
# Checks that the component manifest doesn't reference files that are not
# present in the package.
#
# Parameters
#
#   component_manifest (required)
#     A component manifest to validate.
#     Type: path
#
#   package_manifest (optional)
#     A package manifest to validate against.
#     If not provided, a package manifest will be generated out of deps.
#     Type: path
#
#   label (required)
#     A GN label to use in error messages, to make troubleshooting easier.
#     Type: label
#
#   data_deps
#   deps
#   public_deps
#   testonly
#   visibility
template("validate_component_manifest_references") {
  assert(
      defined(invoker.component_manifest),
      "Must specify exactly one of component_manifest, component_manifests_rspfile")

  if (defined(invoker.package_manifest)) {
    package_manifest = invoker.package_manifest
  } else {
    fini_target = "${target_name}_fini"
    package_manifest = "$target_gen_dir/${fini_target}_file"
    fini_manifest(fini_target) {
      forward_variables_from(invoker,
                             [
                               "data_deps",
                               "deps",
                               "public_deps",
                               "testonly",
                             ])
      visibility = [ ":*" ]
      outputs = [ package_manifest ]
    }
  }

  stamp_file = "$target_gen_dir/$target_name.action.stamp"
  action(target_name) {
    forward_variables_from(invoker,
                           [
                             "data_deps",
                             "deps",
                             "public_deps",
                             "testonly",
                             "visibility",
                           ])
    script = "//tools/cmc/build/validate_component_manifest_references.py"
    inputs = [
      package_manifest,
      invoker.component_manifest,
    ]
    outputs = [ stamp_file ]
    args = [
      "--component_manifest",
      rebase_path(invoker.component_manifest, root_build_dir),
      "--package_manifest",
      rebase_path(package_manifest, root_build_dir),
      "--gn-label",
      invoker.label,
      "--stamp",
      rebase_path(stamp_file, root_build_dir),
    ]

    if (!defined(deps)) {
      deps = []
    }
    if (defined(fini_target)) {
      deps += [ ":$fini_target" ]
    }
  }
}